exam Maths Puzzle Numerical Ability

Solve and graph.

7(x-3)75x-14

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exam Other Question

solve using augmented matrices
2x+y+z=0
3x-2y-3z=-21
4x+5y+3z=-2 OP = <6,5>, OQ = <13, −2>, u = i − 3j and v = 3i − 2j. If PQ = ku + hv
where k and h are constant, find
a)k and h Hint: PQ = PO + OQ).
k & h already get answer k=1 & h=2....
b)Unit vector for PQ in terms of i and j??